Update versions for EG SystemEvents library (Azure#44090)

I checked in a PR that needed to get a version update. This fixes it.

Author: billwert

sdk/eventgrid/azure-messaging-eventgrid-systemevents/pom.xml

@@ -49,17 +49,17 @@ Code generated by Microsoft (R) TypeSpec Code Generator.
     <dependency>
       <groupId>com.azure</groupId>
       <artifactId>azure-core</artifactId>
-      <version>1.54.1</version> <!-- {x-version-update;com.azure:azure-core;dependency} -->
+      <version>1.55.0</version> <!-- {x-version-update;com.azure:azure-core;dependency} -->
     </dependency>
     <dependency>
       <groupId>com.azure</groupId>
       <artifactId>azure-core-http-netty</artifactId>
-      <version>1.15.7</version> <!-- {x-version-update;com.azure:azure-core-http-netty;dependency} -->
+      <version>1.15.8</version> <!-- {x-version-update;com.azure:azure-core-http-netty;dependency} -->
     </dependency>
     <dependency>
       <groupId>com.azure</groupId>
       <artifactId>azure-core-test</artifactId>
-      <version>1.27.0-beta.4</version> <!-- {x-version-update;com.azure:azure-core-test;dependency} -->
+      <version>1.27.0-beta.5</version> <!-- {x-version-update;com.azure:azure-core-test;dependency} -->
       <scope>test</scope>
     </dependency>
     <dependency>